Prosecution Insights
Last updated: July 17, 2026
Application No. 18/578,970

Phytase Variants with Improved Stability and IP4 Activity

Non-Final OA §112§DP
Filed
Jan 12, 2024
Priority
Jul 16, 2021 — EU 21186223.0 +3 more
Examiner
RAGHU, GANAPATHIRAM
Art Unit
1699
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
AB Enzymes OY
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
963 granted / 1307 resolved
+13.7% vs TC avg
Strong +26% interview lift
Without
With
+26.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
51 currently pending
Career history
1337
Total Applications
across all art units

Statute-Specific Performance

§101
2.7%
-37.3% vs TC avg
§103
61.3%
+21.3% vs TC avg
§102
13.5%
-26.5% vs TC avg
§112
10.6%
-29.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1307 resolved cases

Office Action

§112 §DP
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Detailed Action Amended claims 23-43 (dated 09/30/2024) are pending and is now under consideration for examination. Priority Acknowledgment is also made of applicants’ claim for foreign priority under 35 U.S.C. 119(a)-(d). This application is 371 of PCT/FI2022/050465 filed on 06/23/2022 and claims the priority date of EPO Applications: 21186223.0 filed on 07/16/2021; 21186231.3 filed on 07/16/2021; and 21217370.2 filed on 12/23/2021. Information disclosure statement The information disclosure statement (IDS) submitted on 01/12/2024 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the IDS statement is considered and initialed by the examiner. Objections to Abstract/Specification I. The Abstract of the disclosure is objected to because, Abstract should be on a separate sheet of paper. The abstract of the disclosure is objected to because the abstract is presented as part of the first page of a WO publication. The abstract should be presented as a single sheet apart from all other bibliographic material including the information included on the first page of a WO publication. If EFS is used to submit a replacement abstract, the appropriate abstract (ABST) document code should be used for the one-page document. Correction is required. See MPEP § 608.01 (b). II. The disclosure is objected to because it contains an embedded hyperlink and/or other form of browser-executable code. The specification contains hyperlinks to various site domains, for example, pages 11 and 33 of the instant application. Applicants’ are required to thoroughly scrutinize the specification and delete all embedded hyperlink and/or other form of browser-executable code. See MPEP § 608.01. Appropriate correction is required. III. The listing of references in the specification is not a proper information disclosure statement. 37 CFR 1.98(b) requires a list of all patents, publications, or other information submitted for consideration by the Office, and MPEP § 609.04(a) states, "the list may not be incorporated into the specification but must be submitted in a separate paper." Therefore, unless the references have been cited by the examiner on form PTO-892, they have not been considered. Claim Objections I. Recitation of “and/or” in claims 25 and 38 makes the claim indefinite, as it is not clear what limitations must be present. Correction and clarification is required. Examiner suggests amending the claim to recite “…or …”. II, Claim 26 is objected to, due to the following informality: Claim 26 recites abbreviation "IP4" in the claim. Examiner suggests expanding the abbreviation to recite the full form of what the abbreviation stands for at least in the first recitation. Appropriate correction is required. For examination purposes "IP4" is interpreted as "myo-inositol tetrakisphosphate (IP4)". III. Claim 29 is objected to, due to the following informality: Claim 29 recites “…selected from A56S, V67I,…L352M, or G395A”; for consistency of claim language, examiner suggests amending the claim to recite “…selected from A56S, V67I,…L352M and G395A”. Claim Rejections: 35 USC § 112(b) The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. I. Claims 25 and 38 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, or for pre-AIA the applicant regards as the invention. Recitation of “and/or” in claims 25 and 38 makes the claims indefinite, as it is not clear what limitations must be present. The metes and bounds of claims 25 and 38 are not clear and thus, it would not be possible to one of ordinary skill in the art to define the metes and bounds of the desired patent protection. The rejection may be overcome by amending the claims to recite “… or …”. Correction and clarification is required. Examiner suggests amending the claim to recite “…or …”. II. Claims 25, 30, 36, 38 and 41-42 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor, or for pre-AIA the applicant regards as the invention. A broad range or limitation together with a narrow range or limitation that falls within the broad range or limitation (in the same claim) is considered indefinite, since the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. See MPEP § 2173.05(c). Note the explanation given by the Board of Patent Appeals and Interferences in Ex parte Wu, 10 USPQ2d 2031, 2033 (Bd. Pat. App. & Inter. 1989), as to where broad language is followed by "such as" and then narrow language. The Board stated that this can render a claim indefinite by raising a question or doubt as to whether the feature introduced by such language is (a) merely exemplary of the remainder of the claim, and therefore not required, or (b) a required feature of the claims. Note also, for example, the decisions of Ex parte Steigewald, 131 USPQ 74 (Bd. App. 1961); Ex parte Hall, 83 USPQ 38 (Bd. App. 1948); and Ex parte Hasche, 86 USPQ 481 (Bd. App. 1949). In the present instance, claims 25, 30, 36, 38 and 41-42 recite the broad recitation and also recites “preferably”, “more preferably”, “optionally” and “such as, which is the narrower statement of the range/limitation (range within range). It is not clear what the applicants’ intend to encompass in the rejected claims and the metes and bounds of the claims are unclear and as being indefinite, since the resulting claim does not clearly set forth the metes and bounds of the patent protection desired. Correction and clarification is required. Double Patenting rejection The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP §§ 706.02(l)(1) - 706.02(l)(3) for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/process/file/efs/guidance/eTD-info-I.jsp. Amended claims 23-43 (dated 09/30/2024) of the instant invention are provisionally rejected on the ground of nonstatutory double patenting over amended claims 1-21 (dated 07/22/2024) of co-pending Application No. 18/578,962 (US 20240336902 A1). This is a provisional double patenting rejection because the patentably indistinct claims have not in fact been patented. The subject matter claimed in the instant application is fully disclosed in the referenced co-pending application and would be covered by any patent granted on that co-pending application, since the referenced co-pending application and the instant application are claiming common subject matter; instant application claims “a variant polypeptide comprising an amino acid sequence having at least 80% amino acid sequence identity with SEQ ID NO: 1, comprising histidine at the position 126, and comprising amino acid substitutions at: at least one position selected from 30, 80, 94, 118, 176, 179, 212, 224, 227, 253, 287, 315, and 380; and wherein the variant polypeptide has phytase activity; and wherein the amino acid numbering corresponds to the amino acid numbering of the SEQ ID NO: 1…” and furthermore, the instant application claims and co-pending application claims recite “comprising” and is an open language and includes unrecited elements, and the claimed common subject-matter is as follows: The recited amended claims 1-21 (dated 07/22/2024) of co-pending Application No. 18/578,962 (US 20240336902 A1) encompass “a variant polypeptide comprising an amino acid sequence having at least 80% amino acid sequence identity with SEQ ID NO: 1, wherein the variant has: an amino acid substitution at the position 126; phytase activity; and wherein the amino acid numbering corresponds to the amino acid numbering of the SEQ ID NO: 1…126H…” (see provided sequence alignment), and the subject-matter as claimed in amended claims 23-43 (dated 09/30/2024) of the instant application, falls entirely within the scope of co-pending claims in co-pending reference application. Allowable Subject Matter/Conclusion None of the claims are allowable. Art of Interest The closest prior art is Bai et al., (WO 2019/2288441 A1) disclose generation of variant phytases corresponding to SEQ ID NO: 1 of the instant invention; said phytase comprising the following substitution N126Y corresponding to SEQ ID NO: 1 of the instant invention (see pages 2-3; Claims; and entire document); however, the cited art is not used in any rejection, as the cited art does not disclose N126H mutation as required in the instant claims 23-43. Any inquiry concerning this communication or earlier communications from the examiner should be directed to GANAPATHIRAMA RAGHU whose telephone number is (571)272-4533. The examiner can normally be reached on M-F 8:30am-5pm EST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Robert Mondesi can be reached on 408-918-7584. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /GANAPATHIRAMA RAGHU/ Primary Examiner, Art Unit 1652
Read full office action

Prosecution Timeline

Jan 12, 2024
Application Filed
Jun 08, 2026
Non-Final Rejection mailed — §112, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680117
Method For Producing A Sugar Syrup From A Residual Lignocellulosic Biomass
3y 5m to grant Granted Jul 14, 2026
Patent 12680086
MODIFIED BETA-1,3-N-ACETYLGLUCOSAMINYLTRANSFERASE POLYPEPTIDES
3y 0m to grant Granted Jul 14, 2026
Patent 12674185
METHODS OF PRODUCING MORPHINAN ALKALOIDS AND DERIVATIVES
2y 7m to grant Granted Jul 07, 2026
Patent 12668822
Multi-Mechanistic Channeling Within a Biocatalytic Cascade for the Production of 1,3-Diaminopropane
2y 1m to grant Granted Jun 30, 2026
Patent 12662680
MICROORGANISMS FOR DITERPENE PRODUCTION
3y 2m to grant Granted Jun 23, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
74%
Grant Probability
99%
With Interview (+26.2%)
2y 6m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1307 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month